Liên Kết Ánh Sáng [Light Linking]

With light linking, you can set up lights that only illuminate specific objects in the scene. Shadow linking additionally gives control over which objects block the light (cast shadows).

This adds more artistic control by breaking the laws of physics. For example, you could have a rim light that only illuminates a character in a scene (light linking) and is not blocked by any objects in the scene (shadow linking).

Sắp Đặt (Setup)

You can also use the Kết Nối Dữ Liệu (Link Data) menu for this: select the objects, add the light to the selection, press Ctrl-L, and choose Link Receivers/Blockers to Emitter.

Ghi chú

Emissive mesh objects only support light linking with Cycles.

Grease Pencil objects don't support light linking at all.

Multiple light objects can use the same linking collection. They can also use an existing scene collection, but in general, it's recommended to create dedicated linking collections so you can change these without affecting the scene layout.

Loại Trừ [Include & Exclude]

Light receiver/blocker objects can be set to be either included or excluded. The behavior is as follows:

  • Nếu duy được bao gồm đối tượng sẽ được specified, the nguồn/ánh sáng duy ảnh hưởng those đối tượng.

  • If only excluded objects are specified, the light affects all objects in the scene except those specified.

  • If both included and excluded objects are specified, the light affects only included objects minus the excluded objects. This can be used to for example set a character collection to be included, and then exclude specific objects part of the character.

Hiệu Suất Thi Hành (Performance)

Sampling for light linking is most efficient with the light tree enabled, where a specialized acceleration structure is built for light linking.

When using shadow linking, renders can be slower and trace additional rays, as direct and indirect lighting take different paths.